SourceForge Repository Change

SourceForge.net switched to a new platform in late 2012 and required
all projects to migrate to it.

The most significant change for typical users will be that the MESA
svn repository has a new URL. The MESA project webpage "getting
started" section has been updated to reflect the change.

The simplest way to keep up to date with MESA is to check out a new
copy from the new repository; it's as simple as that.

If you maintain a working copy of MESA under version control for
development purposes, you'll need to do something akin to "svn
relocate" from the old repository to the new. If you have svn version
1.6 or lower, then use "svn switch --relocate" instead. See 'svn help
relocate' (v1.7 and up) or 'svn help switch' (v1.6 and lower).

Don't just copy/paste the below commands. First, run 'svn info' in
your MESA directory to make sure that you have the correct URL for the
old repository.